Electrical Connection - Grundfos LC A2 Manual Del Usuario

6. Level switches
6.1 Float switch
Float switch, type MS2, for installation in tanks and
pits. It is especially suitable for Liftaway B,
Liftaway C 100, Unilift and PUST.
Fig. 1 Float switch
91427145: Float switch with 5 m cable.
91427146: Float switch with 10 m cable.
91427147: Float switch with 20 m cable.
6.2 Vertical level switch
Level switch for installation in the cover of small
lifting stations and tanks. It is especially suitable for
Sololift2 C-3, Sololift+ C-3 and Liftaway C.
Fig. 2 Vertical level switch
97775337: Vertical float switch with 10 m cable.
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7. Electrical connection

Figure 3 shows the position of the terminal blocks for
the control relay (connection of level switch) and the
alarm relay.
Control relay
Fig. 3 Alarm relay
The socket function can be set at the terminal block.
See fig. 4.
• Cont.:
The socket is used as a feed-through socket.
• NO (normally open contact):
The socket will be switched on in case of fault.
• NC (normally closed contact):
The socket will be switched off in case of fault.
This is the default setting for stop of a washing
machine.
Fig. 4 Terminal block, socket function
Alarm relay